Patents by Inventor Akemi Watanabe

Akemi Watanabe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11156645
    Abstract: A semiconductor device includes an analog-digital conversion circuit that converts a voltage at a node between a reference resistor and a sensor resistor into output data, the reference resistor and the sensor resistor being connected in series. The semiconductor device calculates a resistance value of the sensor resistor using a first output data obtained in a first conversion phase and second output data obtained in a second conversion phase. In the first conversion phase, a high potential side voltage is applied to one end of the reference resistor and a low potential side voltage is applied to one end of the sensor resistor. In the second conversion phase, the low potential side voltage is applied to one end of the reference resistor and the high potential side voltage is applied to one end of the sensor resistor.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: October 26, 2021
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Masuo Okuda, Akemi Watanabe
  • Patent number: 11072720
    Abstract: The present invention provides an aqueous ink of active energy ray curable type for ink jet. The aqueous ink contains resin particles and a photo acid generator. The resin particles include a reactive group-containing resin having at least one reactive group selected from the group consisting of an epoxy group, an oxetanyl group and a vinyl ether group. Further provided are an ink cartridge and an ink jet recording method in which the aqueous ink is used.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: July 27, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsuyoshi Furuse, Naofumi Shimomura, Takayuki Horiuchi, Akemi Watanabe, Yoko Uetake, Shoji Shiba
  • Publication number: 20200209289
    Abstract: A semiconductor device includes an analog-digital conversion circuit that converts a voltage at a node between a reference resistor and a sensor resistor into output data, the reference resistor and the sensor resistor being connected in series. The semiconductor device calculates a resistance value of the sensor resistor using a first output data obtained in a first conversion phase and second output data obtained in a second conversion phase. In the first conversion phase, a high potential side voltage is applied to one end of the reference resistor and a low potential side voltage is applied to one end of the sensor resistor. In the second conversion phase, the low potential side voltage is applied to one end of the reference resistor and the high potential side voltage is applied to one end of the sensor resistor.
    Type: Application
    Filed: December 18, 2019
    Publication date: July 2, 2020
    Inventors: Masuo OKUDA, Akemi WATANABE
  • Patent number: 10700693
    Abstract: The analog-to-digital converter includes a quantizer for outputting a quantized signal, a sampling circuit for sampling an analog input signal, a dithering circuit for generating an added voltage, and an integrating circuit for integrating a signal on which the added voltage is superimposed and outputting an integration result to the quantizer. The dithering circuit includes a variable capacitance circuit and a control circuit. The variable capacitance circuit includes a plurality of capacitors. The control circuit controls the capacitance of the variable capacitance circuit to a capacitance smaller than the capacitances of the capacitors, and causes the variable capacitance circuit to generate an added voltage.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: June 30, 2020
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventor: Akemi Watanabe
  • Publication number: 20200071554
    Abstract: The present invention provides an aqueous ink of active energy ray curable type for ink jet. The aqueous ink contains resin particles and a photo acid generator. The resin particles include a reactive group-containing resin having at least one reactive group selected from the group consisting of an epoxy group, an oxetanyl group and a vinyl ether group. Further provided are an ink cartridge and an ink jet recording method in which the aqueous ink is used.
    Type: Application
    Filed: August 16, 2019
    Publication date: March 5, 2020
    Inventors: Tsuyoshi Furuse, Naofumi Shimomura, Takayuki Horiuchi, Akemi Watanabe, Yoko Uetake, Shoji Shiba
  • Publication number: 20190386669
    Abstract: The analog-to-digital converter includes a quantizer for outputting a quantized signal, a sampling circuit for sampling an analog input signal, a dithering circuit for generating an added voltage, and an integrating circuit for integrating a signal on which the added voltage is superimposed and outputting an integration result to the quantizer. The dithering circuit includes a variable capacitance circuit and a control circuit. The variable capacitance circuit includes a plurality of capacitors. The control circuit controls the capacitance of the variable capacitance circuit to a capacitance smaller than the capacitances of the capacitors, and causes the variable capacitance circuit to generate an added voltage.
    Type: Application
    Filed: May 14, 2019
    Publication date: December 19, 2019
    Inventor: Akemi WATANABE
  • Patent number: 10228628
    Abstract: A toner in which the content of polysiloxane is 1% by mass or more and 15% by mass or less based on the total mass of toner particles, the polysiloxane is present in the toner as a domain of 10 nm or more and 500 nm or less, and Siloxane index (Ge)/Siloxane index (D) of the toner particles is 1.0 or less.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: March 12, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Daisuke Yamashita, Takaho Shibata, Hayato Ida, Junichi Tamura, Akemi Watanabe
  • Patent number: 10216106
    Abstract: A method for producing a toner includes a step (1) of forming resin microparticles in an aqueous medium in the presence of a surfactant, a step (2) of aggregating the resin microparticles to form aggregated particles, and a step (3) of heating and the aggregated particles and allowing the aggregated particles to coalesce to form toner particles, in which a resin component in the resin microparticles contains an olefinic copolymer and resin A, the resin A has an acid value of 1 mgKOH/g or more and 50 mgKOH/g or less, the resin A has a SP value of 19.0 (J/cm3)0.5 or more and 21.0 (J/cm3)0.5 or less, and the resin component has an olefinic copolymer content of 50% by mass or more with respect to the total mass of the resin component.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: February 26, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomoyo Miyakai, Junichi Tamura, Hayato Ida, Takaho Shibata, Kouichirou Ochi, Yuya Chimoto, Ryuji Murayama, Daisuke Yamashita, Akemi Watanabe, Takashi Hirasa
  • Publication number: 20180143547
    Abstract: A method for producing a toner includes a step (1) of forming resin microparticles in an aqueous medium in the presence of a surfactant, a step (2) of aggregating the resin microparticles to form aggregated particles, and a step (3) of heating and the aggregated particles and allowing the aggregated particles to coalesce to form toner particles, in which a resin component in the resin microparticles contains an olefinic copolymer and resin A, the resin A has an acid value of 1 mgKOH/g or more and 50 mgKOH/g or less, the resin A has a SP value of 19.0 (J/cm3)0.5 or more and 21.0 (J/cm3)0.5 or less, and the resin component has an olefinic copolymer content of 50% by mass or more with respect to the total mass of the resin component.
    Type: Application
    Filed: May 23, 2016
    Publication date: May 24, 2018
    Inventors: Tomoyo Miyakai, Junichi Tamura, Hayato Ida, Takaho Shibata, Kouichirou Ochi, Yuya Chimoto, Ryuji Murayama, Daisuke Yamashita, Akemi Watanabe, Takashi Hirasa
  • Publication number: 20180031991
    Abstract: A toner in which the content of polysiloxane is 1% by mass or more and 15% by mass or less based on the total mass of toner particles, the polysiloxane is present in the toner as a domain of 10 nm or more and 500 nm or less, and Siloxane index (Ge)/Siloxane index (D) of the toner particles is 1.0 or less.
    Type: Application
    Filed: July 25, 2017
    Publication date: February 1, 2018
    Inventors: Daisuke Yamashita, Takaho Shibata, Hayato Ida, Junichi Tamura, Akemi Watanabe
  • Patent number: 9658550
    Abstract: Toner containing toner particles having a resin component, in which the resin component has an olefin-based copolymer and a crystalline polyester resin, the olefin-based copolymer has a unit Y1 represented by Formula (1) and at least one kind of unit Y2 selected from the group consisting of a unit represented by Formula (2) and a unit represented by Formula (3), a content of the olefin-based copolymer contained in the resin component is 50% by mass or more based on a total mass of the resin component, a content of the unit Y2 is 3% by mass or more and 35% by mass or less based on a total mass of the olefin-based copolymer, and a melt flow rate of the olefin-based copolymer is 30 g/10 min or less.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: May 23, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryuji Murayama, Hayato Ida, Takaho Shibata, Junichi Tamura, Daisuke Yamashita, Akemi Watanabe, Kouichirou Ochi, Yuya Chimoto, Tomoyo Miyakai, Takashi Hirasa
  • Publication number: 20160349645
    Abstract: Toner containing toner particles having a resin component, in which the resin component has an olefin-based copolymer and a crystalline polyester resin, the olefin-based copolymer has a unit Y1 represented by Formula (1) and at least one kind of unit Y2 selected from the group consisting of a unit represented by Formula (2) and a unit represented by Formula (3), a content of the olefin-based copolymer contained in the resin component is 50% by mass or more based on a total mass of the resin component, a content of the unit Y2 is 3% by mass or more and 35% by mass or less based on a total mass of the olefin-based copolymer, and a melt flow rate of the olefin-based copolymer is 30 g/10 min or less.
    Type: Application
    Filed: May 26, 2016
    Publication date: December 1, 2016
    Inventors: Ryuji Murayama, Hayato Ida, Takaho Shibata, Junichi Tamura, Daisuke Yamashita, Akemi Watanabe, Kouichirou Ochi, Yuya Chimoto, Tomoyo Miyakai, Takashi Hirasa
  • Patent number: 8084931
    Abstract: Degradation of a fluorescent material used in an image display device provided with an electron emitting device that is caused by heating in the process of manufacturing the device is prevented. A coating layer 44b composed of SiO2 is formed on the surface of fluorescent material particles 44a, and any metal 49 from among Bi, Pb, Sn, and Sb is added to the coating layer 44b so that the metal concentration at the surface of the coating layer is equal to or greater than 0.05 ppm.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: December 27, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoshiro Saruta, Makoto Souma, Atsushi Miida, Akemi Watanabe
  • Publication number: 20110032128
    Abstract: Provided is an analog-digital converter circuit having a normal mode for converting a received analog signal into a digital signal, and a calibration mode for adjusting an offset voltage of a comparator, the analog-digital converter including: a first comparator having a first analog signal input terminal supplied with an analog signal, and a first reference signal input terminal supplied with a first reference signal, in the normal mode; and a first calibration circuit that adjusts an offset voltage of the first comparator. In the calibration mode, assuming that a calibration resolution of the first calibration circuit is ?1, a potential difference between a reference signal supplied to the first analog signal input terminal and a reference signal supplied to the first reference signal input terminal is n1?1+?1/2 (where n1 is an integer).
    Type: Application
    Filed: June 30, 2010
    Publication date: February 10, 2011
    Applicant: NEC ELECTRONICS CORPORATION
    Inventors: Akemi WATANABE, Yuji NAKAJIMA
  • Patent number: 7843120
    Abstract: A screen structure has a transparent substrate and a color filter on the transparent substrate, and light from a source of luminescence transmits the color filter and the transparent substrate. The transparent substrate has a height difference specified by a refractive index of the transparent substrate, a refractive index of the color filter, and a wavelength of the light which transmits the color filter in an interface with the color filter.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: November 30, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akemi Watanabe, Osamu Takamatsu
  • Publication number: 20100213816
    Abstract: Degradation of a fluorescent material used in an image display device provided with an electron emitting device that is caused by heating in the process of manufacturing the device is prevented. A coating layer 44b composed of SiO2 is formed on the surface of fluorescent material particles 44a, and any metal 49 from among Bi, Pb, Sn, and Sb is added to the coating layer 44b so that the metal concentration at the surface of the coating layer is equal to or greater than 0.05 ppm.
    Type: Application
    Filed: February 23, 2010
    Publication date: August 26, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shoshiro Saruta, Makoto Souma, Atsushi Miida, Akemi Watanabe
  • Publication number: 20090128003
    Abstract: The present invention is a screen structure which has a transparent substrate and a color filter on the transparent substrate, and in which light from a source of luminescence transmits the color filter and the transparent substrate, and the transparent substrate has a height difference specified by a refractive index of the transparent substrate, a refractive index of the color filter, and a wavelength of the light which transmits the color filter in an interface with the color filter.
    Type: Application
    Filed: November 12, 2008
    Publication date: May 21, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Akemi Watanabe, Osamu Takamatsu